Evaluation of evaporation-measuring equipments for estimating evapotranspiration within a greenhouse
With the objective of evaluating the performance of simple evaporation measuring equipments in estimating the evapotranspiration in greenhouse, an experiment was conducted in Piracicaba, SP, during a tomato-growing season. Daily water evaporation rate from Piche atmometer, modified atmometer and a r...
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Published in | Revista brasileira de engenharia agrícola e ambiental Vol. 8; no. 2-3; pp. 184 - 188 |
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Main Authors | , |
Format | Journal Article |
Language | English Portuguese |
Published |
Departamento de Engenharia Agrícola - UFCG
01.12.2004
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Subjects | |
Online Access | Get full text |
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Summary: | With the objective of evaluating the performance of simple evaporation measuring equipments in estimating the evapotranspiration in greenhouse, an experiment was conducted in Piracicaba, SP, during a tomato-growing season. Daily water evaporation rate from Piche atmometer, modified atmometer and a reduced evaporation pan installed inside the greenhouse and a Class A pan installed outside were compared to the evapotranspiration rates calculated with Penman-Monteith equation. Results showed that atmometers had the best performance in estimating the crop evapotranspiration in greenhouse and could be used advantageously in relation to the evaporation pans.
Conduziu-se um experimento em Piracicaba, SP, durante um cultivo de tomateiro, com o propósito de se avaliar a performance de equipamentos simples baseados na evaporação na estimativa da evapotranspiração em ambiente protegido. As taxas diárias de evaporação de um atmômetro de Piche, um atmômetro modificado e de um tanque de evaporação reduzido instalados dentro do ambiente protegido, e de um tanque Classe A instalado no ambiente externo, foram comparadas à evapotranspiração calculada com a equação de Penman-Monteith. Os resultados mostraram que os atmômetros tiveram o melhor desempenho na estimativa da evapotranspiração da cultura e podem ser utilizados com vantagens em relação aos tanques de evaporação. |
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Bibliography: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662004000200004 10.1590/S1415-43662004000200004 |
ISSN: | 1415-4366 1807-1929 1807-1929 1415-4366 |
DOI: | 10.1590/S1415-43662004000200004 |